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Finding the Fourth Proportional to 1,202.80, 1,659 and 941.44

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Solution

The fourth proportional to 1,202.80, 1,659 and 941.44 is: 1,298.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,202.80 : 1,659 = 941.44 : x
  2. Step 2: Convert to fraction form
    1,202.80/1,659 = 941.44/x
  3. Step 3: Cross multiply
    1,202.80x = 1,659 × 941.44
  4. Step 4: Simplify right side
    1,202.80x = 1,561,848.96
  5. Step 5: Solve for x
    x = 1,561,848.96/1,202.80
  6. Step 6: Final answer
    x = 1,298.51

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.